SG71048A1 - Glass substrate magnetic recording medium and method of manufacturing the magnetic recording medium - Google Patents

Glass substrate magnetic recording medium and method of manufacturing the magnetic recording medium

Info

Publication number
SG71048A1
SG71048A1 SG1997003620A SG1997003620A SG71048A1 SG 71048 A1 SG71048 A1 SG 71048A1 SG 1997003620 A SG1997003620 A SG 1997003620A SG 1997003620 A SG1997003620 A SG 1997003620A SG 71048 A1 SG71048 A1 SG 71048A1
Authority
SG
Singapore
Prior art keywords
recording medium
magnetic recording
manufacturing
glass substrate
substrate magnetic
Prior art date
Application number
SG1997003620A
Inventor
Kouichi Takahashi
Takeshi Kojima
Takemi Miyamoto
Original Assignee
Hoya Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya Corp filed Critical Hoya Corp
Publication of SG71048A1 publication Critical patent/SG71048A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/21—Circular sheet or circular blank
    • Y10T428/219—Edge structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
SG1997003620A 1996-09-30 1997-09-30 Glass substrate magnetic recording medium and method of manufacturing the magnetic recording medium SG71048A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28015496 1996-09-30
JP28015396 1996-09-30

Publications (1)

Publication Number Publication Date
SG71048A1 true SG71048A1 (en) 2000-03-21

Family

ID=26553646

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1997003620A SG71048A1 (en) 1996-09-30 1997-09-30 Glass substrate magnetic recording medium and method of manufacturing the magnetic recording medium

Country Status (5)

Country Link
US (2) US6096405A (en)
EP (1) EP0833309B1 (en)
CN (1) CN1148727C (en)
DE (1) DE69718584T2 (en)
SG (1) SG71048A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6544893B2 (en) * 1999-03-30 2003-04-08 Hoya Corporation Method of manufacturing a glass substrate for an information recording medium, and method of manufacturing an information recording medium
US6458018B1 (en) 1999-04-23 2002-10-01 3M Innovative Properties Company Abrasive article suitable for abrading glass and glass ceramic workpieces
US6363599B1 (en) 1999-08-04 2002-04-02 Komag, Inc. Method for manufacturing a magnetic disk including a glass substrate
US6718612B2 (en) * 1999-08-04 2004-04-13 Asahi Glass Company, Ltd. Method for manufacturing a magnetic disk comprising a glass substrate using a protective layer over a glass workpiece
US6615613B1 (en) * 1999-09-30 2003-09-09 Hoya Corporation Method of grinding a substrate and method of manufacturing a glass substrate and a magnetic recording medium by the use of the glass substrate
US6402851B1 (en) * 2000-05-19 2002-06-11 International Business Machines Corporation Lanthanide oxide dissolution from glass surface
JP4274708B2 (en) * 2001-05-14 2009-06-10 Ｈｏｙａ株式会社 Glass substrate for magnetic recording medium and manufacturing method thereof
JP2003016633A (en) * 2001-06-28 2003-01-17 Asahi Glass Co Ltd Glass substrate for magnetic disk and method for manufacturing the same
JP4561950B2 (en) * 2001-08-08 2010-10-13 信越化学工業株式会社 Square substrate
JP2003201148A (en) * 2001-10-31 2003-07-15 Nippon Sheet Glass Co Ltd Holder for chemical tempering of glass substrate for information recording medium
JP2003160348A (en) * 2001-11-21 2003-06-03 Nippon Sheet Glass Co Ltd Glass substrate for information recording medium and its manufacturing method
US7323276B2 (en) * 2003-03-26 2008-01-29 Hoya Corporation Substrate for photomask, photomask blank and photomask
US7395679B2 (en) * 2004-03-19 2008-07-08 Konica Minolta Opto, Inc. Method of manufacturing glass substrate for information recording medium
US20060018052A1 (en) * 2004-07-23 2006-01-26 Konica Minolta Opto, Inc. Information recording medium glass substrate, information recording medium, information recording apparatus and manufacturing method of information recording medium glass substrate
WO2006025541A1 (en) * 2004-08-30 2006-03-09 Showa Denko K.K. Glass substrate for magnetic recording medium and magnetic recording medium
JP2006114198A (en) * 2004-09-17 2006-04-27 Showa Denko Kk Silicon substrate for magnetic recording medium and magnetic recording medium
JP4044546B2 (en) * 2004-09-29 2008-02-06 Ｈｏｙａ株式会社 Magnetic disk and manufacturing method thereof
US20080257779A1 (en) * 2004-09-29 2008-10-23 Hoya Corporation Supporting Member For Thin-Film-Coated Boards, Storage Container For Thin-Film-Coated Boards, Mask-Blank-Storing Body, Transfer-Mask-Storing Body, and Method For Transporting Thin-Film-Coated Boards
WO2007007650A1 (en) * 2005-07-08 2007-01-18 Showa Denko K.K. Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus
JP5467706B2 (en) * 2006-03-24 2014-04-09 Ｈｏｙａ株式会社 Manufacturing method of glass substrate for magnetic disk and manufacturing method of magnetic disk
US20100075180A1 (en) * 2006-10-16 2010-03-25 Hiroaki Ueda Magnetic recording medium substrate and manufacturing method thereof, and magnetic recording medium and manufacturing method thereof
MY168621A (en) * 2014-03-31 2018-11-14 Hoya Corp Magnetic-disk glass substrate
JP7045647B2 (en) * 2017-11-13 2022-04-01 日本電気硝子株式会社 Glass substrate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105374B1 (en) * 1982-02-05 1989-04-19 Matsushita Electric Industrial Co., Ltd. Optical recording/reproduction disc
DE3682985D1 (en) * 1985-08-30 1992-01-30 Sharp Kk METHOD FOR PRODUCING AN OPTICAL DIRECTORY.
JP2506123B2 (en) * 1987-09-29 1996-06-12 シャープ株式会社 optical disk
JP2816472B2 (en) * 1989-04-28 1998-10-27 ティーディーケイ株式会社 Magnetic recording media
JP2564223B2 (en) * 1992-01-29 1996-12-18 旭栄研磨加工株式会社 Cutout grinding tool and cutout grinding method for donut type substrate
US5569518A (en) * 1993-07-07 1996-10-29 Ag Technology Co., Ltd. Glass substrate for a magnetic disk with roughened edges

Also Published As

Publication number Publication date
DE69718584T2 (en) 2003-07-03
US6096405A (en) 2000-08-01
CN1148727C (en) 2004-05-05
US6217980B1 (en) 2001-04-17
CN1178361A (en) 1998-04-08
EP0833309A1 (en) 1998-04-01
EP0833309B1 (en) 2003-01-22
DE69718584D1 (en) 2003-02-27

Similar Documents

Publication Publication Date Title
SG65718A1 (en) Glass substrate for information recording medium method of manufacturing the substrate magnetic recording medium using the glass substrate and method of manufacturing the medium
SG71048A1 (en) Glass substrate magnetic recording medium and method of manufacturing the magnetic recording medium
SG84541A1 (en) Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same
SG71102A1 (en) Information recording medium and method of fabricating the same
SG83784A1 (en) Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same
SG67326A1 (en) Optical recording medium and method of manufacturing same
SG91259A1 (en) Glass substrate for magnetic media and method of making the same
EP0501815A3 (en) Magnetic medium and method of manufacturing the same
SG38924A1 (en) Magnetic recording medium and method for fabricating the same
SG72852A1 (en) Optical recording medium and recording and reproducing method using the same
HK1038426A1 (en) Recording and/or reproducing method of recording medium
EP0911820A4 (en) Optical recording medium and its substrate
EP0657880A3 (en) Magneto-optical recording medium and manufacturing method thereof.
SG43384A1 (en) Optical data recording medium and manufacturing method thereof
GB2312083B (en) An optical recording medium and a method of fabricating the same
SG71751A1 (en) Thin film magnetic head and method of manufacturing the same
EP0858974A4 (en) Glass for information recording medium substrate and glass substrate
EP0593875A3 (en) Information recording medium and methods of manufacturing and using the same
SG71824A1 (en) Optical recording medium and method of manufacturing optical recording medium
SG38900A1 (en) Method of manufacturing magnetic recording medium
EP0706176A4 (en) Optical recording medium and method of manufacturing the same
EP0405450A3 (en) Data recording medium and method of manufacturing the same
GB2235811B (en) Optical data recording medium and method of manufacturing the same
EP0927995A4 (en) Optical recording medium and method of its manufacture
EP0927951A4 (en) Magnetic recording medium and method for using the same